when I sync my iphone with i tunes, it doesnt sync contacts or other information because I apparently "disabled" syncing on this phone. It asks if i want to continue, I click yes, and then it says: cannot sync. You can either click override or ok, both of them lead to syncing only the music and pictures etc. without the contacts and information.It says there is no Connection to Sync Server. I disabled the Antivirus und downloaded Itunes again, but nothing helps. What should i do? thank you